Effect of Slurry on the pH and Viscosity for the Preparation of High Attrition Resistance Zinc-based Desulfurization Sorbents by Spray Drying Method 


Vol. 12,  No. 4, pp. 232-237, Dec.  2006


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  Abstract

The zinc-based desulfurization sorbents for a fluidized-bed system were prepared by a spray drying method and the effects of the pH and viscosity of the slurry on the sttrition resistance of the prepared sorbents were investigated in this work. In order to improve the attrition resistance, alumina sol was used for an inorganic binder and pH of the slurry was changed for its better dispersion in slurry. The attrition resistance of the prepared sorbents decreased due to the phase transiton of alumina sol to gel as the slurry pH increased to its basicity. The optimum pH condition for the good attrition resistance of the sorbents was about 6.0 in this study. It was confirmed that the attrition property of the sorbents were varied with the viscosity of the slurry. The attrition resistance of the sorbents prepared by the spray drying method increased as their bulk density incresaed, while it decreased as the surface area and porosity of the sorbents. The optimum viscosity for the high attrition was in the range 400-500 cP.

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  Cite this article

[IEEE Style]

K. BC, P. NK, H. GB, R. SO, L. TJ, "Effect of Slurry on the pH and Viscosity for the Preparation of High Attrition Resistance Zinc-based Desulfurization Sorbents by Spray Drying Method," Clean Technology, vol. 12, no. 4, pp. 232-237, 2006. DOI: .

[ACM Style]

Kwon BC, Park NK, Han GB, Ryu SO, and Lee TJ. 2006. Effect of Slurry on the pH and Viscosity for the Preparation of High Attrition Resistance Zinc-based Desulfurization Sorbents by Spray Drying Method. Clean Technology, 12, 4, (2006), 232-237. DOI: .

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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